OracleDBAudit - Connection to database from unknown IP

Back


Id	80b1dd6d-1aea-471e-be7a-a4a0afdeec80
Rulename	OracleDBAudit - Connection to database from unknown IP
Description	Detects when user connects to a database from IP address which is not present in AllowList.
Severity	Medium
Tactics	InitialAccess
Techniques	T1078
Required data connectors	SyslogAma
Kind	Scheduled
Query frequency	1h
Query period	1h
Trigger threshold	0
Trigger operator	gt
Source Uri	https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/OracleDatabaseAudit/Analytic Rules/OracleDBAuditForbiddenSrcIpAddr.yaml
Version	1.0.2
Arm template	80b1dd6d-1aea-471e-be7a-a4a0afdeec80.json

KQL

let ip_allowlist = dynamic(['127.0.0.2']);
OracleDatabaseAuditEvent
| where isnotempty(SrcIpAddr)
| where DbAction =~ 'CONNECT'
| where SrcIpAddr !in (ip_allowlist)
| project SrcIpAddr, DstUserName
| extend AccountCustomEntity = DstUserName
| extend IPCustomEntity = SrcIpAddr

YAML

query: |
  let ip_allowlist = dynamic(['127.0.0.2']);
  OracleDatabaseAuditEvent
  | where isnotempty(SrcIpAddr)
  | where DbAction =~ 'CONNECT'
  | where SrcIpAddr !in (ip_allowlist)
  | project SrcIpAddr, DstUserName
  | extend AccountCustomEntity = DstUserName
  | extend IPCustomEntity = SrcIpAddr  
name: OracleDBAudit - Connection to database from unknown IP
queryPeriod: 1h
id: 80b1dd6d-1aea-471e-be7a-a4a0afdeec80
kind: Scheduled
requiredDataConnectors:
- connectorId: SyslogAma
  datatypes:
  - Syslog
triggerOperator: gt
queryFrequency: 1h
tactics:
- InitialAccess
triggerThreshold: 0
status: Available
relevantTechniques:
- T1078
version: 1.0.2
description: |
    'Detects when user connects to a database from IP address which is not present in AllowList.'
entityMappings:
- entityType: Account
  fieldMappings:
  - columnName: AccountCustomEntity
    identifier: FullName
- entityType: IP
  fieldMappings:
  - columnName: IPCustomEntity
    identifier: Address
severity: Medium
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/OracleDatabaseAudit/Analytic Rules/OracleDBAuditForbiddenSrcIpAddr.yaml

ARM